As we know, it's hard to join a bitcoin-based signature campaign posted in the "services" section. As seen, there are plenty of altcoin bounties that most forum users are trying to participate. Can you say that these campaigns are profitable? Or have you had the chance to join a signature campaign (altcoin bounty) that you found very lucrative in the past?
Profitable if you're lucky to join in bounties wherein the rewards after getting listed in exchanges soar high and you happen to sell on the right time. But if your rewards dont have value after waiting for long then it's likely a shit project and all your effort after months of promoting are wasted. I once joined in alts paying sig campaign few years back and it is indeed profitable because the token is already listed in exchanges while the campaign is running hence we can already sell it.
Thus it depends, you can only profit if you spot a good bounty and that's a bit hard. Some hunters chose a reputable manager as their sign for a reliable bounty but it's not a guarantee. You still need to conduct an extensive research.